CN113965103B - Motor and electronic device - Google Patents

Abstract

The present application discloses a motor and an electronic device, which belongs to the field of device structure technology. The motor includes a shell, a first electro-vibration plate, a second electro-vibration plate, a mass block and a counterweight. The shell is provided with a receiving cavity. The first electro-vibration plate, the second electro-vibration plate, the mass block and the counterweight are all arranged in the receiving cavity. The mass block and the counterweight are located between the first electro-vibration plate and the second electro-vibration plate. When a voltage is applied to the first electro-vibration member, the first electro-vibration member drives the mass block to move. When a voltage is applied to the second electro-vibration member, the second electro-vibration member drives the counterweight to move. This solution solves the problem that the structural parts that realize the sound and vibration functions in the existing electronic devices occupy a lot of space, have high implementation costs, and interfere with surrounding devices.

Description

Motors and electronic equipment

Technical Field

The present application belongs to the field of device structure technology, and specifically relates to a motor and electronic equipment.

Background technique

In mobile communication terminals such as mobile phones, there are two types of incoming call prompts: sound prompts and vibration prompts. In the prior art, these two functions are performed by speakers and vibration motors respectively. However, with the development of technology, the size of mobile phones continues to shrink and the thickness continues to thin. Therefore, the size of the components and spare parts that make up the mobile phone is becoming more and more miniaturized, and the components and spare parts also need to be integrated to reduce their number. Specifically, the vibration motor is shown in Figure 1, including: upper housing a, mass block b, magnet c, pole piece d, shrapnel e, coil yoke f, coil g, flexible circuit board (FPC) h and lower housing i; the speaker is shown in Figure 2, including: yoke j, magnet k, voice coil l, steel plate m, shrapnel n, middle frame o, vibration membrane p and ball top q.

In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: the use of speakers and vibration motors in mobile phones not only occupies the internal space of the mobile phone, but also increases the production cost of the mobile phone; and the vibration motors and speakers currently used require the use of magnets and coils to generate electromagnetics, so that the magnetic fields and electric fields they exist interfere with and affect the circuits and devices around the electronic equipment, affecting the overall layout of the mobile phone.

As can be seen from the above, the structural components for realizing the sound and vibration functions in the existing electronic devices have the problems of occupying a lot of space, high realization cost, and interfering with surrounding devices.

Summary of the invention

The purpose of the embodiments of the present application is to provide a motor and an electronic device that can solve the problem that the structural parts that realize the sound and vibration functions in the existing electronic devices occupy a lot of space, have high implementation costs, and interfere with surrounding devices.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a motor, comprising a housing, a first electro-vibration sheet, a second electro-vibration sheet, a mass block, and a counterweight, wherein the housing is provided with a receiving cavity, the first electro-vibration sheet, the second electro-vibration sheet, the mass block, and the counterweight are all arranged in the receiving cavity, and the mass block and the counterweight are located between the first electro-vibration sheet and the second electro-vibration sheet;

The housing comprises a top shell and a bottom shell which are arranged opposite to each other, the first surface of the first electro-vibration piece is connected to the top shell, the second surface of the first electro-vibration piece is electrically connected to the mass block, the first surface of the second electro-vibration piece is connected to the bottom shell, and the second surface of the second electro-vibration piece is connected to the counterweight;

When a voltage is applied to the first electro-vibration member, the first electro-vibration member drives the mass block to move;

When a voltage is applied to the second electro-vibrating element, the second electro-vibrating element drives the counterweight to move;

Wherein, the mass block is not in contact with the second electro-vibration piece and the counterweight.

Optionally, it further includes a limiting member, wherein the limiting member is arranged between the second electro-vibration piece and the mass block;

When the mass block is in position-limiting cooperation with the position-limiting member, the mass block is not in contact with the second electro-vibration piece and the counterweight.

Optionally, the limiting member is fixed to the inner wall of the accommodating cavity, or the limiting member is arranged on the second surface of the second electro-vibration piece.

Optionally, the mass block is an annular structure, and in the moving direction of the mass block, the projection of the mass block does not overlap with the projection of the counterweight.

Optionally, the limiting member is an annular structural member;

In the moving direction of the mass block, the first annular projection area of the limit member, the second annular projection area of the mass block and the third projection area of the counterweight body do not overlap with each other, and the second annular projection area is located outside the third projection area, and the first annular projection area is located outside the second annular projection area.

Optionally, the first electro-vibration piece includes a first annular support and a first driving part, the first annular support has a first through hole, the first driving part is located in the first through hole and connected to the hole wall of the first through hole;

The first driving part is connected to the top shell toward the first surface of the top shell, and the first annular bracket is connected to the mass block toward the second surface of the mass block;

When a voltage is applied to the first electro-vibrator, the first driving unit drives the first annular support to move the mass block.

Optionally, the first annular bracket includes a first semi-annular member and a second semi-annular member that are symmetrically arranged, and the first semi-annular member and the second semi-annular member cooperate to form the first through hole.

Optionally, the second electro-vibration sheet includes a second bracket, a second driving unit and a third bracket, the third bracket is connected to the second bracket through the second driving unit, the second bracket is connected to the bottom shell toward the first surface of the bottom shell, and the third bracket is connected to the counterweight toward the second surface of the top shell;

When a voltage is applied to the second electro-vibrator, the second driving unit drives the third bracket to move the counterweight.

Optionally, the first electro-vibration plate is an ion-conducting vibration plate;

When the voltage applied to the ion-conducting vibration piece is a first voltage, the ion-conducting vibration piece drives the mass block to move along a first direction;

When the voltage applied to the ion-conducting vibration piece is a second voltage, the ion-conducting vibration piece drives the mass block to move along a second direction;

The first voltage and the second voltage have opposite polarities, and the first direction is opposite to the second direction.

Optionally, when the voltage applied to the ion-conducting vibration plate is a first voltage, the ion-conducting vibration plate drives the mass block to move a first distance along a first direction;

When the voltage applied to the ion-conducting vibration piece is a third voltage, the ion-conducting vibration piece drives the mass block to move a second distance along the first direction;

The first voltage and the third voltage have the same polarity, the third voltage is greater than the first voltage, and the first distance is different from the second distance.

Optionally, when the voltage applied to the ion-conducting vibration plate is a first voltage, the ion-conducting vibration plate drives the mass block to move along a first direction at a first speed;

When the voltage applied to the ion-conducting vibration piece is a third voltage, the ion-conducting vibration piece drives the mass block to move along the first direction at a second speed;

The first voltage and the third voltage have the same polarity, the third voltage is greater than the first voltage, and the first rate is different from the second rate.

Optionally, the second electro-vibration plate is an ion-conducting vibration plate;

When the voltage applied to the ion-conducting vibration piece is a first voltage, the ion-conducting vibration piece drives the counterweight to move along a first direction;

When the voltage applied to the ion-conducting vibration piece is a second voltage, the ion-conducting vibration piece drives the counterweight to move along a second direction;

The first voltage and the second voltage have opposite polarities, and the first direction is opposite to the second direction.

Optionally, when the voltage applied to the ion-conducting vibration sheet is a first voltage, the ion-conducting vibration sheet drives the counterweight to move a first distance along a first direction;

When the voltage applied to the ion-conducting vibration plate is a third voltage, the ion-conducting vibration plate drives the counterweight to move a second distance along the first direction;

The first voltage and the third voltage have the same polarity, the third voltage is greater than the first voltage, and the first distance is different from the second distance.

Optionally, when the voltage applied to the ion-conducting vibration sheet is a first voltage, the ion-conducting vibration sheet drives the counterweight to move along a first direction at a first speed;

When the voltage applied to the ion-conducting vibration piece is a third voltage, the ion-conducting vibration piece drives the counterweight to move along the first direction at a second speed;

The first voltage and the third voltage have the same polarity, the third voltage is greater than the first voltage, and the first rate is different from the second rate.

Optionally, the ion-conducting vibration plate includes a first electrode layer, an ion exchange resin layer and a second electrode layer stacked in sequence, and the ion exchange resin layer contains a polymer electrolyte.

In a second aspect, an embodiment of the present application provides an electronic device, including: the above-mentioned motor.

In the embodiment of the present application, a shell, a first electro-vibration sheet, a second electro-vibration sheet, a mass block and a counterweight are arranged, wherein the shell is provided with a receiving cavity, wherein the first electro-vibration sheet, the second electro-vibration sheet, the mass block and the counterweight are all arranged in the receiving cavity, and the mass block and the counterweight are located between the first electro-vibration sheet and the second electro-vibration sheet; wherein the shell comprises a top shell and a bottom shell which are arranged opposite to each other, wherein a first surface of the first electro-vibration sheet is connected to the top shell, a second surface of the first electro-vibration sheet is electrically connected to the mass block, a first surface of the second electro-vibration sheet is connected to the bottom shell, and a first surface of the second electro-vibration sheet is electrically connected to the mass block. Two surfaces are connected to the counterweight; when voltage is applied to the first electro-vibrator, the first electro-vibrator drives the mass block to move; when voltage is applied to the second electro-vibrator, the second electro-vibrator drives the counterweight to move; wherein the mass block is not in contact with the second electro-vibrator plate and the counterweight; it is possible to use one component to realize both sound and vibration functions, thereby reducing the occupied space and reducing the implementation cost, and there is no need to use magnetic steel and electromagnetism, avoiding interference with surrounding devices; it is a good solution to the problems in existing electronic devices that the structural parts that realize the sound and vibration functions occupy a lot of space, have high implementation costs, and interfere with surrounding devices.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a vibration motor in the prior art;

FIG2 is a schematic diagram of a speaker structure in the prior art;

FIG3 is a schematic diagram of a motor structure according to an embodiment of the present application;

FIG4 is a second schematic diagram of the motor structure of an embodiment of the present application;

FIG5 is a schematic diagram of the structure of a first annular bracket according to an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a first electro-vibration sheet according to an embodiment of the present application;

FIG7 is a schematic diagram of the working principle of the ion conduction vibration sheet according to an embodiment of the present application;

FIG8 is a schematic diagram 1 of a motor realizing a vibration function according to an embodiment of the present application;

FIG9 is a second schematic diagram of a motor realizing a vibration function according to an embodiment of the present application;

FIG10 is a schematic diagram of a motor realizing a sound-generating function according to an embodiment of the present application;

FIG11 is a second schematic diagram of a motor realizing a sound-generating function according to an embodiment of the present application;

FIG12 is a schematic diagram of the structure of an ion-conducting vibration sheet according to an embodiment of the present application;

FIG13 is a first schematic diagram of deformation of an ion-conducting vibration plate according to an embodiment of the present application;

FIG. 14 is a second schematic diagram of the deformation of the ion-conducting vibration plate according to an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally indicates that the objects associated with each other are in an "or" relationship.

The motor structure provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

As shown in FIGS. 3 and 4 and FIGS. 8 to 11 , the motor provided in the embodiment of the present application comprises a housing 1, a first electro-vibration sheet 2, a second electro-vibration sheet 3, a mass block 4 and a counterweight 5, wherein the housing 1 is provided with a receiving cavity 6, wherein the first electro-vibration sheet 2, the second electro-vibration sheet 3, the mass block 4 and the counterweight 5 are all arranged in the receiving cavity 6, and the mass block 4 and the counterweight 5 are located between the first electro-vibration sheet 2 and the second electro-vibration sheet 3;

The housing 1 comprises a top shell 7 and a bottom shell 8 which are arranged opposite to each other, the first surface of the first electro-vibration piece 2 is connected to the top shell 7, the second surface of the first electro-vibration piece 2 is electrically connected to the mass block 4, the first surface of the second electro-vibration piece 3 is connected to the bottom shell 8, and the second surface of the second electro-vibration piece 3 is connected to the counterweight 5;

When a voltage is applied to the first electro-vibrating member 2, the first electro-vibrating member 2 drives the mass block 4 to move;

When a voltage is applied to the second electro-vibrating member 3, the second electro-vibrating member 3 drives the counterweight 5 to move;

The mass block 4 is not in contact with the second electro-vibration piece 3 and the counterweight 5 .

The motor provided in the embodiment of the present application is provided with: a shell, a first electro-vibration sheet, a second electro-vibration sheet, a mass block and a counterweight body, wherein the shell is provided with a receiving cavity, wherein the first electro-vibration sheet, the second electro-vibration sheet, the mass block and the counterweight body are all arranged in the receiving cavity, and the mass block and the counterweight body are located between the first electro-vibration sheet and the second electro-vibration sheet; the shell comprises a top shell and a bottom shell which are arranged opposite to each other, wherein the first surface of the first electro-vibration sheet is connected to the top shell, the second surface of the first electro-vibration sheet is electrically connected to the mass block, the first surface of the second electro-vibration sheet is connected to the bottom shell, and the second electro-vibration sheet the second surface of the device is connected to the counterweight; when a voltage is applied to the first electro-vibrator, the first electro-vibrator drives the mass block to move; when a voltage is applied to the second electro-vibrator, the second electro-vibrator drives the counterweight to move; wherein the mass block is not in contact with the second electro-vibrator plate and the counterweight; it is possible to use one component to realize both the sound and vibration functions, thereby reducing the occupied space and reducing the implementation cost, and there is no need to use magnetic steel and electromagnetism, avoiding interference with surrounding devices; it is a good solution to the problems in existing electronic devices where structural parts that realize the sound and vibration functions occupy a lot of space, have high implementation costs, and interfere with surrounding devices.

The main function of the counterweight in the embodiment of the present application is to adjust the resonant frequency of the sound.

In the embodiment of the present application, the motor may further include a vibration plate bracket, the vibration plate bracket is arranged around the second electro-vibration plate, and the second electro-vibration plate is fixedly connected to the bottom shell through the vibration plate bracket. The vibration plate bracket can be made of low-cost insulating material to save the amount of the second electro-vibration plate and reduce the cost of the motor.

Further, as shown in FIG3 and FIG4, the motor further includes a stopper 9, which is disposed between the second electro-vibration sheet 3 and the mass block 4; when the mass block 4 is in position-limited cooperation with the stopper 9, the mass block 4 is not in contact with the second electro-vibration sheet 3 and the counterweight 5. More specifically, the stopper 9 is disposed around the periphery of the counterweight 5.

This can prevent the mass block from colliding with the second electro-vibration plate and causing the second electro-vibration plate to be damaged.

Specifically, as shown in FIG. 3 , the stopper 9 is fixed to the inner wall of the accommodating cavity 6 , or the stopper 9 is disposed on the second surface of the second electro-vibration piece 3 .

In the embodiment of the present application, as shown in FIG. 3 and FIG. 4 , the mass block 4 is an annular structure, and in the moving direction of the mass block 4 , the projection of the mass block 4 does not overlap with the projection of the counterweight 5 .

This facilitates the realization of the vibration function, as well as the deployment and installation of the structure.

Specifically, the material of the mass block may be tungsten alloy, or other metal or non-metal material with a relatively high density, such as iron, copper, quartz, etc.

This can ensure a better sense of vibration and realize the vibration function.

In the embodiment of the present application, as shown in FIG. 3 and FIG. 4 , the counterweight body 5 is an annular structure.

This makes it easier to realize the sound-generating function and to use and install.

In the embodiment of the present application, as shown in FIG. 3 and FIG. 4 , the stopper 9 is an annular structural member;

In the moving direction of the mass block 4, the first annular projection area of the limit member 9, the second annular projection area of the mass block 4 and the third projection area of the counterweight body 5 do not overlap with each other, and the second annular projection area is located outside the third projection area, and the first annular projection area is located outside the second annular projection area.

This ensures that the structures will not interfere with each other during subsequent use.

In the embodiment of the present application, the first electro-vibration sheet is connected to the low-frequency current interface, so as to ensure the realization of the vibration function.

In the embodiment of the present application, the second electro-vibration sheet is connected to the high-frequency current interface, so as to ensure the realization of the sound-generating function.

Specifically, as shown in Figures 3 to 5, the first electro-vibration piece 2 includes a first annular bracket 10 and a first driving part 11, the first annular bracket 10 has a first through hole 12, the first driving part 11 is located in the first through hole 12, and is connected to the hole wall of the first through hole 12; the first driving part 11 is connected to the top shell 7 toward the first surface of the top shell 7, and the first annular bracket 10 is connected to the mass block 4 toward the second surface of the mass block 4; when a voltage is applied to the first electro-vibration piece 2, the first driving part 11 drives the first annular bracket 10 to drive the mass block 4 to move.

Among them, the first annular bracket 10 can be a square ring (as shown in Figures 3 and 4) or a circular ring (as shown in Figure 5), which is not limited here; the first driving part 11 can be specifically as shown in Figure 4, which is formed by several staggered strip-shaped sub-vibration plates (such as a "cross" or "swastika" structure), so that the vibration function can be better realized.

As shown in FIG5 , the first annular support 10 includes a first semi-annular member and a second semi-annular member symmetrically arranged, and the first semi-annular member and the second semi-annular member cooperate to form the first through hole 12. The first semi-annular member includes a first semi-annular structure, and the second semi-annular member includes a second semi-annular structure. The mass block 4 is connected to the first semi-annular structure and the second semi-annular structure. The first semi-annular structure and the second semi-annular structure may each include a plurality of first connection points B. For example, the first semi-annular structure and the second semi-annular structure may each include three uniformly distributed first connection points B. The mass block 4 is connected to the first annular support 10 via a plurality of first connection points B.

In the embodiment of the present application, as shown in FIG6 , the first electro-vibration plate 2 is a disc-shaped structural member having a second through hole 13, and the fourth through hole of the mass block 4 is arranged opposite to the second through hole 13, for example, the center of the fourth through hole is located on the axis of the second through hole 13. The disc-shaped structural member includes a base and a disc-shaped structure, and the base and the disc-shaped structure can be integrally formed, and the base is connected to the mass block 4. The disc-shaped structure takes the base as a starting position and extends in a direction away from the mass block 4. The top of the disc-shaped structure is a disc-shaped area, and the disc-shaped area is connected to the top shell 7. Specifically, the disc-shaped area includes an annular area, and a plurality of arc-shaped extension areas connected to the outer edge of the annular area. A third connection point C is set at the intersection of the annular area and the extension area, and the disc-shaped area is connected to the top shell 7 through the third connection point C.

Similarly (not shown in the figure), the second electro-vibration plate can be a disc-shaped structural member provided with a third through hole, and the counterweight body covers the third through hole; or the fifth through hole of the counterweight body is arranged opposite to the third through hole, for example, the center of the fifth through hole is located on the axis of the third through hole. The disc-shaped structural member includes a base and a disc-shaped structure, and the base and the disc-shaped structure can be integrally formed, and the base is connected to the bottom shell. The disc-shaped structure takes the base as a starting position and extends in a direction away from the bottom shell. The top of the disc-shaped structure is a disc-shaped area, and the disc-shaped area is connected to the counterweight body. Specifically, the disc-shaped area includes an annular area, and a plurality of arc-shaped extension areas connected to the outer edge of the annular area. A fourth connection point is set at the intersection area of the annular area and the extension area, and the disc-shaped area is connected to the counterweight body through the fourth connection point.

In the embodiment of the present application, as shown in Figures 3, 4, 10 and 11, the second electro-vibration piece 3 includes a second bracket 14, a second driving unit 15 and a third bracket 16, the third bracket 16 is connected to the second bracket 14 through the second driving unit 15, the second bracket 14 is connected to the bottom shell 8 toward the first surface of the bottom shell 8, and the third bracket 16 is connected to the counterweight 5 toward the second surface of the top shell 7; when voltage is applied to the second electro-vibration piece 3, the second driving unit drives the third bracket 16 to move the counterweight 5.

Specifically, as shown in Figures 3, 4, 10 and 11, the area in contact with the bottom shell 8 is the second bracket 14, the area in contact with the counterweight 5 is the third bracket 16, and the deformable area between the second bracket 14 and the third bracket 16 is the second driving part 15.

There is a gap between the third bracket 16 and the bottom shell 8 .

In an embodiment of the present application, the first electro-vibration plate is an ion-conducting vibration plate; when the voltage applied to the ion-conducting vibration plate is a first voltage, the ion-conducting vibration plate drives the mass block to move in a first direction; when the voltage applied to the ion-conducting vibration plate is a second voltage, the ion-conducting vibration plate drives the mass block to move in a second direction; wherein, the first voltage and the second voltage have opposite polarities, and the first direction is opposite to the second direction.

Specifically, when the voltage applied to the ion conduction vibration plate is a first voltage, the ion conduction vibration plate drives the mass block to move a first distance along a first direction; when the voltage applied to the ion conduction vibration plate is a third voltage, the ion conduction vibration plate drives the mass block to move a second distance along the first direction; wherein, the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first distance is different from the second distance.

The first distance may be greater than the second distance, or the first distance may be smaller than the second distance; this is not limited here.

Specifically, when the voltage applied to the ion conduction vibration plate is a first voltage, the ion conduction vibration plate drives the mass block to move in a first direction at a first rate; when the voltage applied to the ion conduction vibration plate is a third voltage, the ion conduction vibration plate drives the mass block to move in the first direction at a second rate; wherein the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first rate is different from the second rate.

The first rate may be greater than the second rate, or the first rate may be less than the second rate; this is not limited here.

In an embodiment of the present application, the second electro-dynamic vibration piece is an ion-conducting vibration piece; when the voltage applied to the ion-conducting vibration piece is a first voltage, the ion-conducting vibration piece drives the counterweight to move in a first direction; when the voltage applied to the ion-conducting vibration piece is a second voltage, the ion-conducting vibration piece drives the counterweight to move in a second direction; wherein, the first voltage and the second voltage have opposite polarities, and the first direction is opposite to the second direction.

Specifically, when the voltage applied to the ion conduction vibration plate is a first voltage, the ion conduction vibration plate drives the counterweight to move a first distance along a first direction; when the voltage applied to the ion conduction vibration plate is a third voltage, the ion conduction vibration plate drives the counterweight to move a second distance along the first direction; wherein, the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first distance is different from the second distance.

The first distance may be greater than the second distance, or the first distance may be smaller than the second distance; this is not limited here.

Specifically, when the voltage applied to the ion conduction vibration plate is a first voltage, the ion conduction vibration plate drives the counterweight to move in a first direction at a first speed; when the voltage applied to the ion conduction vibration plate is a third voltage, the ion conduction vibration plate drives the counterweight to move in the first direction at a second speed; wherein, the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first speed is different from the second speed.

The first rate may be greater than the second rate, or the first rate may be less than the second rate; this is not limited here.

In the embodiment of the present application, as shown in FIG12, the ion-conducting vibration plate includes a first electrode layer 101, an ion exchange resin layer 102 and a second electrode layer 103 stacked in sequence, and the ion exchange resin layer 102 contains a polymer electrolyte. The ion-conducting vibration plate can be made of ion-exchange polymer metal composite (IPMC for short). IPMC material is a new type of electro-actuated functional material, which uses an ion exchange resin layer (such as fluorocarbon polymer, etc.) as a matrix, and plates precious metals (such as platinum, silver, etc.) on the surface of the matrix to form electrode layers, namely the first electrode layer 101 and the second electrode layer 103. The ion exchange resin layer 102 includes a polymer electrolyte, and the polymer electrolyte contains cations and anions. The positions and quantities of cations and anions in FIG12 are only for illustration and do not represent the actual situation. As shown in Figures 13 and 14, when voltage is applied to the IPMC in the thickness direction, the hydrated cations in the polymer electrolyte will move to the cathode side, causing a difference in swelling between the anode and cathode sides of the IPMC, thereby causing deformation and bending toward the anode side. In this way, the degree of bending of the IPMC can be controlled by controlling the power-on voltage or current of the IPMC, causing the IPMC to be displaced in the lateral direction.

IPMC material is a new type of driving material with the advantages of light driving weight, large displacement deformation, and low driving voltage. The advantages of using IPMC are obvious. For example, IPMC is a non-magnetic material and will not produce magnetic interference; the displacement and speed generated by IPMC deformation decrease in proportion to the thickness of IPMC, and the force generated by IPMC deformation increases in proportion to the cube of the thickness of IPMC. Therefore, the thickness of IPMC can be set according to actual conditions to achieve the required displacement, speed and force generated by IPMC deformation.

By applying voltage to the ion-conducting vibration sheet, the cations in the polymer electrolyte move to the cathode side, causing a difference in swelling between the front and back sides of the ion-conducting vibration sheet. This difference can cause the ion-conducting vibration sheet to deform. By alternating the direction of the voltage applied to the ion-conducting vibration sheet, the deformation direction of the ion-conducting vibration sheet can be changed alternately, thereby driving the mass block 4 or the counterweight body 5 to move alternately, generating a vibration sensation. The vibration amplitude can be 0.1 mm to 10 mm, and the vibration amplitude can be controlled by setting the thickness of the ion-conducting vibration sheet and adjusting the current passing through the ion-conducting vibration sheet.

FIG13 is a schematic diagram showing the distribution of cations in the ion-conducting vibration plate when a positive current passes through the ion-conducting vibration plate, wherein the cations move to the cathode side of the ion-conducting vibration plate, the ion-conducting vibration plate moves upward, and drives the mass block 4 or the counterweight 5 to move upward. The direction indicated by the arrow in FIG13 is the moving direction of the ion-conducting vibration plate.

FIG14 is a schematic diagram showing the distribution of cations in the ion-conducting vibration plate when a negative current passes through the ion-conducting vibration plate, wherein the cations move to the cathode side of the ion-conducting vibration plate, the ion-conducting vibration plate moves downward, and drives the mass block 4 or the counterweight body 5 to move downward. The direction indicated by the arrow in FIG14 is the movement direction of the ion-conducting vibration plate. By applying voltage to the ion-conducting vibration plate, the cations in the polymer electrolyte of the ion-conducting vibration plate move to the cathode side, causing a difference in swelling between the front and back sides, causing the ion-conducting vibration plate to deform. When an alternating current is applied to the ion-conducting vibration plate, the ion-conducting vibration plate drives the mass block 4 to vibrate back and forth, thereby generating a vibration sensation; or drives the counterweight body 5 to vibrate back and forth to produce a sound.

The motor provided in the embodiment of the present application is further described below.

In response to the above technical problems, an embodiment of the present application provides a motor, which can be specifically a vibration motor that can produce sound: the two components of the speaker and the vibration motor are integrated into one component, saving internal space of the mobile phone and reducing costs, and no magnets and electromagnets are used, so there is no interference with surrounding devices.

The vibration motor that can make sound provided in the embodiment of the present application can specifically use an ion-conducting vibration sheet based on a soft polymer actuator to replace the ordinary linear motor shrapnel and the vibration membrane of the speaker, and provide driving force. The ion-conducting vibration sheet is made by applying voltage, and the cations in the polymer electrolyte move to the cathode side, causing the difference in swelling between the front and back sides and reciprocating deformation. The vibration sheet that can vibrate reciprocatingly is made. Through the temperature sensor in the whole machine, when the temperature point required for vibration heat dissipation is reached, a low-power electrical signal of about 0.05W is automatically output. The energized vibration sheet can continuously reciprocate to realize the vibration of the internal vibration component of the motor, or the energized vibration sheet can continuously reciprocate to drive the surrounding vibration and make sound. Due to the non-magnetic steel design and coil-free design, it will not interfere with or affect the circuits and devices around the surrounding electronic equipment.

Specifically, the working principle of the ion conduction vibration sheet is shown in Figure 5 (the s in the figure represents the electrode): the vibration sheet is a composite actuator element, in which gold is formed on the ion exchange resin as the electrode by special chemical gold plating, and the displacement performance is greatly improved by making the electrode surface positively enlarged. By applying voltage, the cations in the polymer electrolyte move to the cathode side, causing the difference in swelling between the front and back sides and deformation. The vibration amplitude can cover from 0.1mm to 10mm, and the vibration amplitude can be reasonably controlled by controlling the thickness of the vibration sheet and the current size.

As shown in FIG3 and FIG4, the vibration motor that can make sound provided by the embodiment of the present application includes an upper shell (i.e., the top shell 7 mentioned above), a lower shell (i.e., the bottom shell 8 mentioned below), an ion-conducting vibration piece (a first electro-induced vibration piece 2 and a second electro-induced vibration piece 3), a mass block 4, a counterweight 5, a limit block (i.e., a specific implementation of the above-mentioned limit piece 9) and other components. The ion-conducting vibration piece 1 (i.e., the first electro-induced vibration piece 2) can be connected and fixed to the mass block 4 by welding or bonding on one side, and can be connected and fixed to the upper shell by the same method on the other side. The ion-conducting vibration piece 1 can have a variety of shapes, such as a disc or a disc. The material of the mass block 4 can be tungsten alloy, and its function is to move up and down, thereby generating a vibration sense. The ion-conducting vibration piece 2 (i.e., the second electro-induced vibration piece 3) can be connected and fixed to the lower shell by welding or bonding on one side, and a counterweight 5 is fixed by bonding in the middle position of the ion-conducting vibration piece 2. The counterweight 5 mainly functions to adjust the resonance frequency of the sound. At the lower shell position, a limit block is fixed by welding to prevent the mass block 4 from colliding with the ion conduction vibration sheet 2 and causing the ion conduction vibration sheet 2 to be lost. The upper shell and the lower shell can be connected and fixed by welding. Among them, the ion conduction vibration sheet 1 can be driven by low frequency, and the ion conduction vibration sheet 1 drives the mass block 4 to move and generate vibration (corresponding to the following vibration mode); the ion conduction vibration sheet 2 can be driven by high frequency to drive the air to vibrate and generate sound (corresponding to the following sound generation mode); the details are as follows:

This sound-generating vibration motor can be powered by AC. In the vibration mode, when a low-frequency positive current flows through the ion-conducting vibration plate 1, as shown in FIG8 , the cations move to the cathode side (upper side), and the ion-conducting vibration plate moves upward, thereby driving the mass block 4 to vibrate upward.

When a low-frequency negative current flows through the ion-conducting vibration plate 1, as shown in FIG9 , the cations move to the cathode side (lower side), and the ion-conducting vibration plate 1 moves downward, thereby driving the mass block 4 to vibrate downward; when alternating current flows through the motor, vibration is achieved.

In the sound-generating mode, when a high-frequency positive current flows through the ion-conducting vibration sheet 2, as shown in FIG10 , the cations move to the cathode side (upper side), and the ion-conducting vibration sheet 2 moves downward, synchronously driving the surrounding air to vibrate and generate sound;

When a high-frequency negative current flows through the ion conduction vibration plate 2, as shown in FIG11, the cations move to the cathode side (lower side), and the ion conduction vibration plate 2 moves upward, synchronously driving the surrounding air to vibrate; the high-frequency vibration of the ion conduction vibration plate 2 drives the surrounding air to vibrate and make a sound.

This vibration motor that can make sound, when the ion conduction vibration piece is not powered, in a free state (i.e., a steady state, a balanced static state), the vibration mode and the sound mode can be powered separately or synchronously to meet the application requirements of electronic products, which is not limited here.

From the above, it can be seen that the technical effects achieved by the solution provided in the embodiment of the present application include: one device realizes the two functions of a speaker and a vibration motor; at the same time, there is no magnetic steel and coil design in this solution, so no magnetic field and electric field will be generated to interfere with and affect the circuits and devices around the electronic equipment.

An embodiment of the present application also provides an electronic device, including: the above-mentioned motor structure.

The electronic device provided in the embodiment of the present application can realize various functions realized by the motor structure embodiments of Figures 1 to 9, and will not be described again here to avoid repetition.

It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims (16)

1. The motor is characterized by comprising a shell, a first electro-vibration piece, a second electro-vibration piece, a mass block and a counterweight body, wherein a containing cavity is formed in the shell, the first electro-vibration piece, the second electro-vibration piece, the mass block and the counterweight body are all arranged in the containing cavity, and the mass block and the counterweight body are positioned between the first electro-vibration piece and the second electro-vibration piece;

the shell comprises a top shell and a bottom shell which are distributed in a back-to-back mode, a first surface of the first electro-vibration piece is connected with the top shell, a second surface of the first electro-vibration piece is electrically connected with the mass block, a first surface of the second electro-vibration piece is connected with the bottom shell, and a second surface of the second electro-vibration piece is connected with the counterweight body;

When a voltage is applied to the first electro-vibration element, the first electro-vibration element drives the mass block to move;

when a voltage is applied to the second electro-vibration element, the second electro-vibration element drives the counterweight body to move;

wherein the mass block is not contacted with the second electro-vibration piece and the counterweight body; the counterweight body is used for adjusting the resonant frequency of sound production; the mass block is used for realizing the vibration function.

2. The motor of claim 1, further comprising a stopper disposed between the second electro-active vibrating piece and the mass;

And under the condition that the mass block is in limit fit with the limiting piece, the mass block is not contacted with the second electro-vibration piece and the counterweight body.

3. The motor according to claim 2, wherein the stopper is fixed to the inner wall of the accommodation chamber or the stopper is provided to the second face of the second electro-active vibration piece.

4. A motor according to claim 2 or 3, wherein the mass is an annular structural member, the projection of the mass being non-coincident with the projection of the counterweight in the direction of movement of the mass.

5. The motor of claim 4, wherein the stop is an annular structural member;

In the moving direction of the mass block, the first annular projection area of the limiting piece, the second annular projection area of the mass block and the third projection area of the counterweight body are not overlapped, the second annular projection area is located outside the third projection area, and the first annular projection area is located outside the second annular projection area.

6. The motor of claim 1, wherein the first electro-vibration plate includes a first ring-shaped bracket having a first through hole and a first driving portion located in the first through hole and connected to a wall of the first through hole;

the first driving part is connected with the top shell towards the first surface of the top shell, and the first annular bracket is connected with the mass block towards the second surface of the mass block;

when voltage is applied to the first electro-vibration part, the first driving part drives the first annular bracket to drive the mass block to move.

7. The motor of claim 6, wherein the first annular bracket includes first and second symmetrically disposed halves that cooperate to form the first throughbore.

8. The motor according to claim 1, wherein the second electro-vibration plate includes a second bracket, a second driving portion, and a third bracket connected to the second bracket through the second driving portion, the second bracket being connected to the bottom case toward a first face of the bottom case, the third bracket being connected to the weight body toward a second face of the top case;

when voltage is applied to the second electro-vibration element, the second driving part drives the third bracket to drive the counterweight body to move.

9. The motor of claim 1, wherein the first electro-active vibrating piece is an ion-conductive vibrating piece;

When the voltage applied to the ion-conducting vibrating piece is a first voltage, the ion-conducting vibrating piece drives the mass block to move along a first direction;

when the voltage applied to the ion conduction vibration piece is a second voltage, the ion conduction vibration piece drives the mass block to move along a second direction;

wherein the first voltage and the second voltage are opposite in polarity, and the first direction is opposite to the second direction.

10. The motor of claim 9, wherein when the voltage applied to the ion conducting membrane is a first voltage, the ion conducting membrane drives the mass to move a first distance in a first direction;

when the voltage applied to the ion conduction vibration piece is a third voltage, the ion conduction vibration piece drives the mass block to move a second distance along the first direction;

The first voltage and the third voltage have the same polarity, the third voltage is larger than the first voltage, and the first distance is different from the second distance.

11. The motor of claim 9, wherein when the voltage applied to the ion conducting membrane is a first voltage, the ion conducting membrane drives the mass to move in a first direction at a first rate;

when the voltage applied to the ion-conducting membrane is a third voltage, the ion-conducting membrane drives the mass to move in the first direction at a second rate;

The first voltage and the third voltage have the same polarity, the third voltage is larger than the first voltage, and the first speed is different from the second speed.

12. The motor of claim 1, wherein the second electrically conductive vibrating piece is an ion conductive vibrating piece;

When the voltage applied to the ion conduction vibration piece is a first voltage, the ion conduction vibration piece drives the counterweight body to move along a first direction;

When the voltage applied to the ion conduction vibration piece is a second voltage, the ion conduction vibration piece drives the counterweight body to move along a second direction;

wherein the first voltage and the second voltage are opposite in polarity, and the first direction is opposite to the second direction.

13. The motor of claim 12, wherein when the voltage applied to the ion-conducting membrane is a first voltage, the ion-conducting membrane drives the counterweight to move a first distance in a first direction;

when the voltage applied to the ion conduction vibration piece is a third voltage, the ion conduction vibration piece drives the counterweight body to move a second distance along the first direction;

The first voltage and the third voltage have the same polarity, the third voltage is larger than the first voltage, and the first distance is different from the second distance.

14. The motor of claim 12, wherein when the voltage applied to the ion-conducting membrane is a first voltage, the ion-conducting membrane drives the weight to move in a first direction at a first rate;

When the voltage applied to the ion-conducting vibrating piece is a third voltage, the ion-conducting vibrating piece drives the counterweight to move in the first direction at a second rate;

The first voltage and the third voltage have the same polarity, the third voltage is larger than the first voltage, and the first speed is different from the second speed.

15. The motor of claim 9 or 12, wherein the ion-conducting vibrating piece includes a first electrode layer, an ion-exchange resin layer, and a second electrode layer stacked in this order, the ion-exchange resin layer having a polymer electrolyte therein.

16. An electronic device, comprising: a motor as claimed in any one of claims 1 to 15.